Effective. The Civil Code stipulates that if the parties conclude a contract in the form of a contract, the contract will be established when both parties sign or seal it. A legally established contract shall take effect upon its establishment. Where laws and administrative regulations stipulate that examination and approval, registration and other procedures shall be handled, such provisions shall prevail. Therefore, it is also effective for a company to affix the legal person's seal on a contract without signing it, except for a contract that should go through the formalities of examination and approval and registration as stipulated by laws and administrative regulations, or that the parties agree that it must be sealed and signed.

Legal objectivity:

Article 490 of the Civil Code If the parties conclude a contract in the form of a contract, the contract is established when the parties sign, seal or press their fingerprints. Before signing, sealing or fingerprinting, one party has fulfilled its main obligations, and the contract is established when the other party accepts it. A contract shall be concluded in written form as stipulated by laws, administrative regulations or agreed by the parties. If the parties do not do this in writing, but one party has fulfilled its main obligations and the other party accepts it, the contract is established.